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Old 12th July 2013, 12:19 PM   #1
panos1 is offline panos1  Greece
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Default subwoofer amplifier

hi,
i'm panos from greece and this is my first post here....
i'm trying to make a pa active subwoofer....
i bought the woofer(b&c 18ps76) and now my problem is the amplifier....
i want to make a class d power amp but i cant find a schematic....
i'm thinking of something with irs2092-buffer and 4+ mosfets.....
i believe that 800 watt power amp would be ok for 600 watt sub...do you agree?
please can you help me find a schematic??
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Old 13th July 2013, 03:30 AM   #2
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refer to IR demo,there are many complete design,
if you are a new guy,First study how it work and next to design by yourself!
【DIY Project】120W x 3 Channel Class D Amplifier【Let's Make Class D easier 】
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Old 14th July 2013, 07:06 PM   #3
panos1 is offline panos1  Greece
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thank you for your reply.i will take a look at ir demo....has anyone built any aud amp?i saw aud1000 and i believe that's what i'm looking for but is it a good circuit?
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Old 22nd July 2013, 06:57 PM   #4
panos1 is offline panos1  Greece
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hi,
i decide to buy this kit DIY Kit of L20D 200W 250W 200W 250W 8ohm IRS2092 IRFB4020PBF Class D | eBay
and i want to brige the two boards in order to achieve 700watt 8 ohms....
can you help me with a circuit?
how can i bridge them?
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Old 22nd July 2013, 07:23 PM   #5
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Location: Carlisle, England
Quote:
Originally Posted by panos1 View Post
thank you for your reply.i will take a look at ir demo....has anyone built any aud amp?i saw aud1000 and i believe that's what i'm looking for but is it a good circuit?
I built a 1000watt IRS2092 amplifier and it sounds very good.

If you are a beginner I would recommend buying one ready built.
It took me 3 pcb revisions before I got a reliable working amplifier.
The 2092 is fussy about decoupling and layout.
The 2092 is also fussy about its over current protect circuit, I found with the basic app note circuit I kept getting resets on high powers.
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Old 22nd July 2013, 07:34 PM   #6
panos1 is offline panos1  Greece
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i,m thinking of builting two chanel of ucd 25-1200 watt power amplifier with +-57volt which wiil give me 400 watt 4 ohm....
then i wiil bridge them and i will have 800 watt 8 at 8 ohm load...what's your opinion about this?

Last edited by panos1; 22nd July 2013 at 07:37 PM.
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